A Speed-Adaptive Reduced-Order Observer for Sensorless Vector Control of Doubly Fed Induction Generator-Based Variable-Speed Wind Turbines

2010 ◽  
Vol 25 (3) ◽  
pp. 891-900 ◽  
Author(s):  
Sheng Yang ◽  
Venkataramana Ajjarapu
Keyword(s):  
Vector Control ◽  
Wind Turbines ◽  
Induction Generator ◽  
Doubly Fed Induction Generator ◽  
Variable Speed ◽  
Reduced Order ◽  
Sensorless Vector Control ◽  
Reduced Order Observer ◽  
Doubly Fed

scholarly journals Modelling and power control of grid-connected wind energy system

2018 ◽  
Vol 8 (2) ◽  
pp. 87-95
Author(s):  
Nadia Ben Si Ali ◽  
Nora Zerzouri ◽  
Nadia Benalia
Keyword(s):  
Wind Energy ◽  
Vector Control ◽  
Wind Turbines ◽  
Energy System ◽  
Control Technique ◽  
Induction Generator ◽  
Doubly Fed Induction Generator ◽  
Wind Energy Generation ◽  
Power Point ◽  
Doubly Fed

Wind energy generation has attracted great interests in recent years. Doubly Fed Induction Generator (DFIG) for wind turbines are largely deployed because variable-speed wind turbines have many advantages over fixed-speed generation such as increased energy capture, operation at maximum power point, improved efficiency, and power quality. This paper presents the operation and vector control of a Doubly-fed Induction Generator (DFIG) system where the stator is connected directly to a stiff grid and the rotor is connected to the grid through bidirectional back-to-back AC-DC-AC converter. The basic operational characteristics , mathematical model of the aerodynamic system and vector control technique which is  used to obtain decoupled control of powers are investigated using the software Matlab/Simulink.

scholarly journals The fuzzy logic controllers synthesis method in the vector control system of the wind turbine doubly-fed induction generator

2020 ◽  
Vol 166 ◽  
pp. 04006
Author(s):  
Andrey Uskov ◽  
Vadym Shchokin ◽  
Oleksii Mykhailenko ◽  
Oleksii Kryvenko
Keyword(s):  
Control System ◽  
Wind Turbine ◽  
Vector Control ◽  
Wind Turbines ◽  
Alternative Energy ◽  
Induction Generator ◽  
Doubly Fed Induction Generator ◽  
Inference System ◽  
Doubly Fed ◽  
Vector Control System

The article is devoted to the improvement of control systems for wind turbines by developing fuzzy controllers with higher transient characteristics and low computational costs of identification in comparison with the applied PI controllers. Based on the self-organization method, a fuzzy speed controller of the doubly-fed induction generator (DFIG) of a wind turbine was synthesized, which uses a zero-order Sugeno fuzzy inference system and is made in the form of a block-oriented Wiener model. This regulator is an element of the vector control system of the transistor converter on the rotor side. The results of simulation modeling of the fuzzy controller showed that it provides a lower transition time compared to the PI controller, by 53.59% during acceleration and by 79.76% during braking, and 23.81% less error speed deviations from the reference signal. Such indicators can minimize losses while maintaining the maximum output power point of the power plant. The implementation of the developed system on wind turbines contributes to increasing the efficiency of wind farms, reducing the cost of electricity production, reducing the payback period of equipment, and the sustainable development of alternative energy in general.

Double Fed Induction Generator Control for Wind Power Generation

2020 ◽  
pp. 144-157
Author(s):  
Sumer Chand Prasad
Keyword(s):  
Wind Speed ◽  
Wind Turbine ◽  
Wind Turbines ◽  
System Stability ◽  
Induction Generator ◽  
Doubly Fed Induction Generator ◽  
Variable Speed ◽  
Wind Turbine System ◽  
Speed Fluctuation ◽  
Doubly Fed

Doubly-fed induction generator wind turbines are largely developed due to their variable speed feature. The response of wind turbines to grid disturbance is an important issue, especially since the rated power of the wind turbine is increased; therefore, it is important to study the effect of grid disturbances on the wind turbine. In the chapter, the characteristics of the doubly-fed induction generator during wind speed fluctuation are studied. MATLAB/Simulink software has been used to observe the characteristics of wind turbines during wind speed fluctuation. Simulation results of the doubly-fed induction generator wind turbine system show improved system stability during wind speed variation. Power electronics converters used in the DFIG system are the most sensitive parts of the variable speed wind turbines with regards to system disturbances. To protect from excessive current, the DFIG system is equipped with an over-current and DC voltage overload protection system that trips the system under abnormal conditions.

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